true/fals....please help fast
 

hey...the following are true/false question that i am having trouble figuring them out.....if the sentence is false you need to correct them....(underlined worlds are may/maynot true) please help ASAP.

1) the atomic mass of an atom is based on a comparison with the mass of sulfur-32.
- my guss- true

2) a mole of an ionic compound contains 6.02 * 10^ 23 [u]MOLECULES.[/u]
- myguess- false

3) the molar mass of a substance in grams is always equal to the formula in a.m.u.
-myguess- true

4) one mole Of HN03(three atoms of oxygen) contains 3 ATOMS of oxygen.
-my guess- true
thnaks in advance .....DO NOT JUST SAY DO YOUR HOMEWORK.....I'VE TRIED MY BEST.

READ YOUR CHEMISTRY BOOKS (at least it doesn't say "do your homeworks"... :lol: )

here is my so-called answer...

1.(dunno what are you talking about..)
2.my guess is true...(avogaldro.....something...)
3.Huh?(don't understand question...sorry)
4.duh...it is true....

1) False, Based on carbon-12
4) False, not three atoms but 3 moles.